Question

this is an excellent example of a using
pattern; an analogous color harmony
pattern; a monochromatic color harmony
pattern; a complementary color harmony
pattern; pointillism

Explanation:

The image shows a repeating design (pattern). The colors used are adjacent on the color - wheel (orange and yellow), which is an analogous color harmony. Analogous colors create a harmonious and pleasing visual effect. Monochromatic would be different shades of one color. Complementary colors are opposite on the color - wheel. Pointillism involves small dots of color.

Answer:

pattern; an analogous color harmony